Research by the Inequality Briefing organisation reveals how big the gap between rich and poor in the UK has grown. To the extent that the UK has the single richest region (Inner London) as well as nine of the ten poorest regions in Northern Europe(see the map below).You can access their briefing paper by clicking here (and the graphic here), in which they state:

"the poorest UK regions are by far the poorest in Northern Europe. This is because the UK is much more unequal than other countries, where there is nowhere as rich as London, but nowhere as poor as our poorest regions."